[http://www.usda.gov/wps/portal/!ut/p/_s.7_0_A/7_0_1OB?navtype=SU&navid=NATURAL_RESOURCES '''Department of Agriculture, Natural Resources and Environment'''] -- Links to the National Invasive Species Information Center and an extensive Plants Database.

[http://www.usda.gov/wps/portal/!ut/p/_s.7_0_A/7_0_1OB?navtype=SU&navid=NATURAL_RESOURCES '''Department of Agriculture, Natural Resources and Environment'''] -- Links to the National Invasive Species Information Center and an extensive Plants Database.

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[http://www.doi.gov/ '''Department of the Interior''']

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* [http://www.blm.gov '''Bureau of Land Management''']

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* [http://www.boem.gov/ '''Bureau of Ocean Energy Management'''] - Manages the exploration and development of the nation's offshore resources.

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* [http://www.usbr.gov/ '''Bureau of Reclamation'''] -- Manages water in the western states.

International Organizations

European Environment Agency - Supports “sustainable development and to help achieve significant and measurable improvement in Europe's environment through the provision of timely, targeted, relevant and reliable information to policy making agents and the public."